I am new to android development, Now currently am working on an App for Image Steganography. So in my app , I need to convert an Image that i selected from gallery to Bits array(Each pixel will have a 8 bit value, thats what i mean), How can i do it ? Can anybody help me ?
public class ImageActivity extends Activity {
private Button btnSelectImage;
private Button btnEncode;
String Pathfile=new String();
public String selectedImagePath;
private ImageView myImage;
Bitmap result;
public static final int ICON_SELECT_GALLERY = 1;
private static final Object IMAGE_TAKER_REQUEST = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_image);
btnSelectImage = (Button) findViewById(R.id.button1);
btnEncode = (Button) findViewById(R.id.button2);
btnSelectImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
selectImage();
}
});
myImage = (ImageView) findViewById(R.id.imageView1);
}
public void selectImage() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, ICON_SELECT_GALLERY);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (resultCode == RESULT_OK)
{
if (requestCode == 1)
{
Uri selectedImageUri = data.getData();
String selectedImagePath = getPath(selectedImageUri);
Log.v("IMAGE PATH====>>>> ",selectedImagePath);
TextView imgPath=(TextView)findViewById(R.id.textView2);
imgPath.setText(selectedImagePath);
Pathfile=new String(selectedImagePath);
result = BitmapFactory.decodeFile(Pathfile);
myImage.setImageBitmap(result);
}
}
}
public String getPath(Uri uri)
{
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}
Pass Bitmap and method will return byte[]
public static byte[] getBytesFromBitmap(Bitmap bitmap){
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.JPEG, 70, stream);
return stream.toByteArray();
}
Related
I have tried many different approaches but none of them seem to help, so the problem is the following:
Image isn't uploading to imageButton. I have the path and I have checked it via debugger, added some Toasts to that the fragment gets to the onActivityResult and it does, but the image isn't uploading. Any ideas?
public class AddProductFragment extends Fragment {
private static final String TAG = "AddProductFragment";
private static final int GALLERY_INTENT = 2;
private Uri imageUri;
private ImageButton imageButton;
private EditText productName,produtPrice,productDescription;
private Button btnCancel,btnAdd;
private FirebaseDatabase mDb;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mDb = FirebaseDatabase.getInstance();
}
private void onClickEvents() {
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(Intent.ACTION_PICK);
i.setType("image/*");
startActivityForResult(Intent.createChooser(i,"Select Picture"),GALLERY_INTENT);
}
});
btnAdd.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//TODO: Edit this;
String name = productName.getText().toString();
String price = produtPrice.getText().toString();
String description = productDescription.getText().toString();
DatabaseOperation dbOps = new DatabaseOperation(mDb,getContext());
dbOps.AddProduct(imageUri,name,price,description);
}
});
btnCancel.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//TODO: exit fragment
}
});
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_add_product, container, false);
imageButton = (ImageButton) v.findViewById(R.id.imageButton2);
productName = (EditText)v.findViewById(R.id.addProduct_productName);
produtPrice = (EditText)v.findViewById(R.id.addProduct_productPrice);
productDescription = (EditText)v.findViewById(R.id.addProduct_productDescription);
btnAdd = (Button) v.findViewById(R.id.addProduct_addBtn);
btnCancel = (Button) v.findViewById(R.id.addProduct_cancelBtn);
onClickEvents();
return v;
}
public Bitmap getBitmap(String path) {
Bitmap bitmap = null;
try {
File f = new File(path);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
bitmap = BitmapFactory.decodeStream(new FileInputStream(f), null, options);
imageButton.setImageBitmap(bitmap);
} catch (Exception e) {
e.printStackTrace();
return null;
}
return bitmap;
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
Toast.makeText(AddProductFragment.this.getActivity(), "Number 1", Toast.LENGTH_SHORT).show();
if(requestCode == GALLERY_INTENT){
Toast.makeText(AddProductFragment.this.getActivity(), "Number 2", Toast.LENGTH_SHORT).show();
if(resultCode == Activity.RESULT_OK) {
Toast.makeText(AddProductFragment.this.getActivity(), "Number 3", Toast.LENGTH_SHORT).show();
String path = getPathFromCameraData(data, this.getActivity());
Toast.makeText(AddProductFragment.this.getActivity(), "Uploading", Toast.LENGTH_SHORT).show();
if (path != null) {
setFullImageFromFilePath( path);
Toast.makeText(AddProductFragment.this.getActivity(), "Uploaded", Toast.LENGTH_SHORT).show();
}
}
}
}
public void setFullImageFromFilePath( String imgPath) {
// btn.setImageBitmap(BitmapFactory.decodeFile(imgPath));
getBitmap(imgPath);
}
public static String getPathFromCameraData(Intent data, Context ctx) {
Uri selectedImage = data.getData();
String[] pathToFile = {MediaStore.Images.Media.DATA};
Cursor cursor = ctx.getContentResolver().query(selectedImage, pathToFile, null,
null, null);
if(cursor == null) return null;
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(pathToFile[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
return picturePath;
}
}
case GALLERY_INTENT:
if (resultCode == RESULT_OK) {
Uri selectedImage = imageReturnedIntent.getData();
InputStream imageStream = null;
try {
imageStream = getContentResolver().openInputStream(selectedImage);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap yourSelectedImage = BitmapFactory.decodeStream(imageStream);
image.setImageURI(selectedImage);// To display selected image in image view
}
i'm so fustrated from this little thing that for some reason just doesn't work out...i don't really know what else to do. the pictures im trying to add are been selected by my gallery..(the last thing i've checked was 1024X768 and 32 color bit)
ImageButton img;
private static final int SELECTED_PICTURE = 1;
String picPathFile;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_channel);
img = (ImageButton) findViewById(R.id.imageButton);
img.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, SELECTED_PICTURE);
}
});
// defines the button functionality
Button b = (Button) findViewById(R.id.backToMenu);
b.setOnClickListener(new View.OnClickListener() {
#Override
// defines to move to menu activity when button is pressed
public void onClick(View v) {
Intent showImageIntent = new Intent(AddChannelActivity.this, ShowPreviewChannel.class);
Bitmap selected_image = BitmapFactory.decodeFile(picPathFile);
showImageIntent.putExtra("pic_file", picPathFile);
showImageIntent.putExtra("c_name", name);
showImageIntent.putExtra("c_id", "777");
startActivity(showImageIntent);
//newImage.recycle(); // where do i put it??
//newImage = null;
//selected_image.recycle();
//selected_image = null;
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case SELECTED_PICTURE: {
if (requestCode == SELECTED_PICTURE) {
Uri uri = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(uri,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
picPathFile = picturePath;
have_picture = true;
}
break;
}
default: break;
}
}
Intent intent = getIntent();
// the rellvant part from the show preview class
Bundle bundle = intent.getExtras();
if(bundle!= null){
String picturePath = intent.getStringExtra("pic_file");
Bitmap bm = BitmapFactory.decodeFile(picturePath);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, baos); //bm is the bitmap object
byte[] b = baos.toByteArray(); // HERE~!!!!! out of memory
}
ive tried everything....please help me :/
i saw the baos size is 7193767
I'm a new parse.com user and I want to upload image to it that is chosen by the user.
the user choose the image , then the name of it and then press the upload button
but when I click the button upload the program is crash :(
this is my try
Button btn;
ImageView Pic;
ParseObject shop;
final int PHOTO_SELECTED = 1;
ParseFile file;
ParseFile photoFile;
final Context context = this;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.openshop);
btn = (Button) findViewById(R.id.button1);
Pic = (ImageView) findViewById(R.id.imageView1);
final int PHOTO_SELECTED = 1;
Pic.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
Intent i = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i,PHOTO_SELECTED);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PHOTO_SELECTED && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
final String picturePath = cursor.getString(columnIndex);
cursor.close();
final Bitmap bitmap = BitmapFactory.decodeFile(picturePath);
Pic.setImageBitmap(bitmap);
btn.setOnClickListener(new View.OnClickListener() {
#SuppressLint("NewApi")
public void onClick(View arg0) {
EditText name = (EditText) findViewById(R.id.sname);
shop = new ParseObject("imagetest");
// Bitmap bitmap =BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), Pic);
// Convert it to byte
ByteArrayOutputStream stream = new ByteArrayOutputStream();
// Compress image to lower quality scale 1 - 100
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] image = stream.toByteArray();
// Create the ParseFile
ParseFile file = new ParseFile(name.getText().toString()+".png", image);
// Upload the image into Parse Cloud
file.saveInBackground();
//Create
shop.put("name", name.getText().toString());
shop.put("UserOpen",ParseUser.getCurrentUser());
shop.put("Image", file);
shop.saveInBackground();
// Show a simple toast message
Toast.makeText(getApplicationContext(), "Created",
Toast.LENGTH_SHORT).show();
}
});
}
}
}
thankyou
I'm pretty new with android and I'm having problems specifying whether Intent is coming from camera or gallery in second activity. Here's my code:
MainActivity:
public class MainActivity extends ActionBarActivity implements OnClickListener {
private static final int CAMERA_REQUEST = 1888;
private static final int PICK_FROM_CAMERA = 1;
private static final int PICK_FROM_GALLERY = 2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
Button cameraButton = (Button) this.findViewById(R.id.cameraButton);
Button galleryButton = (Button) this.findViewById(R.id.galleryButton);
//Here we choose to take a new picture
cameraButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,MediaStore.Images.Media.EXTERNAL_CONTENT_URI.toString());
}
});
// Here we choose a photo from the gallery
galleryButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent galleryIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(galleryIntent, PICK_FROM_GALLERY);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode)
{
case PICK_FROM_CAMERA:
if (resultCode == Activity.RESULT_OK)
{
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
Intent captureIntent = new Intent(MainActivity.this, ImageViewerActivity.class);
captureIntent.putExtra("data", imageBitmap);
startActivity(captureIntent);
}
break;
case PICK_FROM_GALLERY:
if (resultCode == Activity.RESULT_OK)
{
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
Intent intent = new Intent(this, ImageViewerActivity.class);
intent.putExtra("picture", byteArray);
startActivity(intent);
}
break;
}
}
public String getPath(Uri uri) {
// just some safety built in
if( uri == null ) {
// TODO perform some logging or show user feedback
return null;
}
// try to retrieve the image from the media store first
// this will only work for images selected from gallery
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
if( cursor != null ){
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
// this is our fallback here
return uri.getPath();
}
ImageViewerActivity:
public class ImageViewerActivity extends Activity {
public static ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.photo_view);
imageView = (ImageView)findViewById(R.id.imageView);
getData();
}
private void getData() {
// TODO Auto-generated method stub
if(//image is from camera)
{
Intent intent = getIntent();
Bitmap bitmap = (Bitmap) intent.getParcelableExtra("data");
imageView.setImageBitmap(bitmap);
}
if(//image is from gallery)
{
Bundle extras = getIntent().getExtras();
byte[] byteArray = extras.getByteArray("picture");
Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
imageView.setImageBitmap(bmp);
}
}
Any help is needed! Thanks a lot!
In your extras, you can pass another field with "INTENT_FROM" and put a String with a identifier = CAMERA, GALLERY or whatever.
To attach it, before sending your intent, create a bundle and add it to the intent that will be sent, like this:
Intent mIntent = new Intent(this, Example.class);
Bundle mBundle = new Bundle();
mBundle.putString(key, value);
mIntent.putExtras(mBundle);
You can find tips to manage bundles here.
Passing a Bundle on startActivity()?
I hope this would help you!
am use activity as a dialog.In that i have button to browse and select the image to show it in image view.
My Dialog activity code and browse image
public class Update_profile extends Activity{
private Uri mImageCaptureUri;
private static final int PICK_FROM_FILE = 1;
private View rootView;
Button save,browse_image;
ImageView profile_pic;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setBackgroundDrawable(new ColorDrawable(0));
setContentView(R.layout.update_profile);
Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler() {
#Override
public void uncaughtException(Thread t, Throwable e) {
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(0);
}
});
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
this.rootView=findViewById(R.id.update_profile_details);
profile_pic = (ImageView)findViewById(R.id.update_profile_picture);
save = (Button)findViewById(R.id.save);
browse_image = (Button)findViewById(R.id.browse_image);
browse_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_FILE);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != RESULT_OK) return;
Bitmap bitmap = null;
String path = "";
if (requestCode == PICK_FROM_FILE) {
mImageCaptureUri = data.getData();
path = getRealPathFromURI(mImageCaptureUri); //from Gallery
Log.v("Path", ""+path);
if (path == null)
path = mImageCaptureUri.getPath(); //from File Manager
Log.v("Path", ""+path);
if (path != null)
bitmap = BitmapFactory.decodeFile(path);
} else {
path = mImageCaptureUri.getPath();
Log.v("Path", ""+path);
bitmap = BitmapFactory.decodeFile(path);
}
profile_pic.setImageBitmap(bitmap);
}
public String getRealPathFromURI(Uri contentUri) {
String [] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery( contentUri, proj, null, null,null);
if (cursor == null) return null;
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
#SuppressLint("NewApi")
#Override
public boolean onTouchEvent(MotionEvent event) {
Rect rect = new Rect();
rootView.getHitRect(rect);
if (!rect.contains((int)event.getX(), (int)event.getY())){
setFinishOnTouchOutside(false);
return true;
}
return false;
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK)) {
finish();
}
return true;
}
}
My manifest code to change the activity as a dialog
<activity
android:name="test.Update_profile"
android:excludeFromRecents="true"
android:launchMode="singleInstance"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.Dialog"
android:windowSoftInputMode="stateHidden" >
</activity>
When am using above browse images code in ordinary activity means it fetch the images and show it in image view but in this dialog activity.its now able to pick the image.I want to pic the image from dialog activity.am not able to solve this issue.Can any one know please help me to solve this issue.
if u want to retrive direct from gallary then use this code
http://viralpatel.net/blogs/pick-image-from-galary-android-app/
this is my method for getting all file from sdcard and u just save this in one datacontroller class ohk dude
private void getallimages()
{
String[] STAR = { "*" };
final String[] columns = { MediaStore.Images.Thumbnails._ID , MediaStore.Images.Media.DATA};
final String orderBy = MediaStore.Images.Media.DEFAULT_SORT_ORDER;
Cursor imagecursor = ((Activity) cntx).managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, STAR, null, null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
int imgNameIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DISPLAY_NAME);
int count = imagecursor.getCount();
for (int i = 0; i < count; i++) {
imagecursor.moveToPosition(i);
int id = imagecursor.getInt(image_column_index);
ImageItem imageItem = new ImageItem();
imageItem.id = id;
imageItem.filePath = imagecursor.getString(imagecursor.getColumnIndex(MediaStore.Images.Media.DATA));
lastId = id;
imageItem.img = MediaStore.Images.Thumbnails.getThumbnail(cntx.getContentResolver(), id,MediaStore.Images.Thumbnails.MICRO_KIND, null);
imageItem.selection = false; //newly added item will be selected by default
controller.images.add(imageItem);
}
}
this is ImageItem wrapper class
public class ImageItem {
public boolean selection=true;
public int id;
public Bitmap img;
public String filePath;
public String fileType;
}
You can try this :
public class EMView extends Activity {
ImageView img,img1;
int column_index;
Intent intent=null;
// Declare our Views, so we can access them later
String logo,imagePath,Logo;
Cursor cursor;
//YOU CAN EDIT THIS TO WHATEVER YOU WANT
private static final int SELECT_PICTURE = 1;
String selectedImagePath;
//ADDED
String filemanagerstring;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
img= (ImageView)findViewById(R.id.gimg1);
((Button) findViewById(R.id.Button01))
.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// in onCreate or any event where your want the user to
// select a file
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,
"Select Picture"), SELECT_PICTURE);
}
});
}
//UPDATED
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
//OI FILE Manager
filemanagerstring = selectedImageUri.getPath();
//MEDIA GALLERY
selectedImagePath = getPath(selectedImageUri);
img.setImageURI(selectedImageUri);
imagePath.getBytes();
TextView txt = (TextView)findViewById(R.id.title);
txt.setText(imagePath.toString());
Bitmap bm = BitmapFactory.decodeFile(imagePath);
img1.setImageBitmap(bm);
}
}
}
//UPDATED!
public String getPath(Uri uri) {
String[] projection = { MediaColumns.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
column_index = cursor
.getColumnIndexOrThrow(MediaColumns.DATA);
cursor.moveToFirst();
imagePath = cursor.getString(column_index);
return cursor.getString(column_index);
}
}